metcalfe



R. D. METCALFE ET AL Re.

EXHAUST STEAK INJECTOR Original il v- 5. 1923 9 Sheets-Sheet 1 mvunon R.D. METCALFE J. C. METCALFE ATTORNEY] 9 Sheets-"Sheet 3 R. D. ME'rcALFE El AL EXHAUST s'rsu INJECTOR 011mm Filed n s.

IIVIIIIOI 5. METCALFE .2. METCALFE G M4. ll

ATTORNEY R. o. METCALFE ET AL EXHAUST smu INJEcTbR '9 Sheets-Sheet 4 Origi Filed Nov. 5, 1923 IIVNTO RD. METCALFE J.C. METQLFE Anonnm Re. 16,398 R. o. METCALFE ET AL EXHAUST STBAI INJECTOR v Y 9 Sheets-Sheet 5 Original Filed NOV.

R. METCALFE ET AL EXHAUST 5TH] INJECTOR 1923 9 Sheets-Sheet 6 Original; Filed 180v. 5

a f M m N m Jul 21 1926. Re. 16,398

R. o. METCALFE ET AL' EXHAUST STBAI INJECTOR m-W'Ffled NW 5, 1923 9 Sheets-Sheet I Ti crll.

mvnrron R.D. METCALFE J. C. MET CAL FE rnonnm July 27 1926.

- Re. 15393 R. D. METCALFE ET AL EXHAUST S'I'BAI INJECTOR Original Filed Nov. 5-. 1923 9 Sheets-Sheet a QQ M LM V ATTORNIYS July 27 1926.

. o. METCALFE ET AL Exams-r s'rBAI xuisc'ron Original Filed 5. 1923 9 Sheets-Sheet 9 INVIITO no. METCALFE J.C.METCALFE cayMmlmi ATTORNEY! I t Forms-1 Io. 1,519,980. and

Reiaued July 27, 1 926.

UNITED STATES f V 1 Re. 16,398

PATENT orries.

mum navln xn'rcurs m ems cnoxoiwnnrcanrn, or Rumm mamas.

This invention relates to injectors workeda I ,b exhaust steam, or steam at about atmos p ric pressure assisted by live steam when it is. desired toraise the injector delivery 8 vpressure to an amount greater than that obtainableby'the use of exhaust steam only.

The object of the present invention is to provide'improved means for regulating or v lltrolling the injector so that t e operator canby suitable movements of one or more handles which can be placed close to ther "andat a considerable distance from t e injeetor, make all the adjustments necessary to obtain satisfactory working under all conditions.

7 valves arranged for remote control in proper sequence from a single handle or its equivalent. Theinvention further comprises-.thecombination with the single control handle, of ,means whereby it also controls the live steam lhsupply to, the in'ector for raising the delivery ressure o the latter.

The invention further comprises the com.- bination with the control handle, of pilot and main steam valves operated from said 80 .handle for controlling the live steam supplyi hto the injector.

e invention further comprises the com bination with the control handle and withthe means operatedthereby for controlling as the exhaust steam inlet valve of the injector,

the water inlet valve and the live steam supplyvalve or valves, of a further valve operated by said handle and adapted to control 7 the flow of steam to the means su plying to.

49v @the injector live steam throttl #qbqut atmospheric pressure for workiilg injector when exhaust steam is not. an able.

down to the Our. invention further comprises the 1mprove v.details..o f,. nstrnction: and arrange- 4! meat reinafter and claimed. Referring to the: accompanying-sheets of ma 1mm p a is a hun elevation and Figure 2 35 v a sideelevationof an exhaust injector con- 1 faocordance: with our invention.

constructed in one convenient gure 3 is msectional elevation Figure 4 a -seetionalplan new. on the an A B of 3,. Figure- 5 a sectionalelevation on The invention comprises the combination with an exhaust steam injector, of steam I operated exhaust steam and water control EXHAUST-8M IIIJ'BOEOR.

fictober 'l, 1824, Serial I01 672,981, fled November 5, 1928. Application for reissue filed a128, 1828. Serial No. 111,895.

the line C D'of Figure 3, Figure 6 a sectional elevation on the line E F,'Figure 3, and Figure 7 a detail view illustrating the details of the construction of the control fitting shown in Figures 1 and 2.

Figure 8 shows in sectional elevation the injector water inlet valve which is controlled from7the instrument illustrated in Figures 1 to F igures 9 and 10 illustrate in sectional elevation, two arrangements controlled from the instrument shown'in Figures 1 to 7 for regulating the admission of exhaust steam to the exhaust injector.

Figure 11 is a sectional side elevation. Figure 12 a sectional planview on the line X X of Figure 11 and Figure 13a front elevation of a modified construction of control fitting. v

Figure 14 is a sectional end elevation on the line Y Y of Figure 11. 1 1

- Figure '15 is a sectional end elevation on the line Z Z of Figure 11.

Figure- 16 is a view illustratin haust injector with our improve arrangements applied thereto. 1

The same reference letters in the different views indicate the same or similar arts.

Referring in the first place to igures 1 to 1O, the handle a is adapted to control the opening ands-losing of the valve b (Figures 9 and 10). by which exhaust steam is allowed to pass into an injector, the valve 0 (Figure 8) by which water is admitted to the injec tor, the valve d and its pilot valve e, by

an excontrol ,which supplementary live steam is admitted to the in ector by way of the passage f (Figures 2 and 4) when the steam'is to pass into the injector under full boiler pressure so as to assist in raising-theinjector delivery pressure and in the form illustrated in Figures 11 to by way of the passage 9 (Figures 11, 12 and 14) when the steam is to be throttled down so that it can act as underside of the 30 ures 2,

4 L y l 1 n Figure 2, the steam valve d tit-i 'i slhzdmittem l othe z y fih er tom the passage m ensures the etficient dimining Qi iih said cylinder. The drainage merely passes intotthenmaineconduit 8! .by .whiehl exhaust steam passes into the injector. The-walveib, when not loaded bysteam pressure acting ..on. thepisfoh j; opensbyireason of the pres sure bithiexh "ilstl'steam acting th'ereen if .a supiplyuofi such steam is available.

In the arrangement-shown"at' FigurelO. a ball type'fdrsinl when" is provided-within .thehpzston .j the drainage passing' by way at thegea p's ti in t he piston end into the exaim-passage The water control valve 0, Figure 8, is held on itsv seatcby' the spring u and opened by thefpusher v wihen steam is admitted below thepi'ston w. m is a'drai'n conhec'tion for ethe fehalhber y. 'The lste am supplyto the I piston w is obtained by Way of tlie connection z,'-Figures2 and- .6; The Icontrol ofthe {steam suppl is efiec't d by .theidieic valve p. is'ahatmospheric connection '3 Fig- 3 and 6, between the steain connections in'and' z." The disc valve'has therethrough two ports and 5 and a long recess 6 (see-.Fig. whilst' the seat over which the disc moves has therein-thr ee ports 7, 8', 19 (see Figure leading-to the connections a, Band n' b'efor'e iflfil'fi tof Anon-return valve 1Q on the atmospheric connection 3 prevents ahyginflo'w of'air to the'control instrument; i "The spindle 11 which carries the disc valve pand'is-tlirnd by the handle a,'has a crank arm 12-thereon,-the'pin' 1361: which ca engagelthehoolred lower end of the stem 1,4'. The upper end of the latter serves to open e ste'ai'n valve 0! whils't' the small diameter endflii'ofthe stem serves to open the I ilot valve c slightin advance of-the'openmg ofjhe vali'e J I 'The ha' dlje a has a paxvl 16 thereon which co-acts"W ith a fixed ratchet plate 17. The pawl'i s operatedfby the trigger arm 18. The operation of t-heinstru'ment' is as follows:" With the handle a in the osition shown p and its pilot 'val'vea'reon their s'atlsQth ort 5 in'the dis 'vaPr I e p isi'nbOIIi ilL iCaho with the port 9" 0 that steam is"passin'g to the cylinderlc (Figure 9 or Figupe l0) and Qhglding the yalije' bonits seati the 'ort 7is'i n comfn'pnicpktioh with the port by .way of the recessi'ini the valve di 'c so that thecham- -l5er"g' ';)eneath the piston 11 is under ,atmospher'ic p esshre and the waterjcontrol valve 0 "tid'nseqliently' closed. When the handle a moves to the position 20. Figure 2, the port Amqmes into coincidencewith the port 7 so with a ntl-iat steam; flows to.-.tl1e water valve control .fitlling (Figure 8) and opens the said valve,

. Macaw valv b ivhen the handle (1 reaches the po- 0. osed.

fi 'tiQI -iQl the pilot steam valve 6 is commencing to open and steam flows therethrough into the injector by-=way of the passage f. Such steam draws the feed water into the injector. The feed water valve remainsopen and theexhau st steam valve 6 -e'losed'. "VVhenthe" handle reaches the position -22, the port -9 commences to come into communication with the atmospheric port 8'iby \vay' ofthe recess 6 in thedisc valve and therefore the valveb (Figures!) or 10) ivillcommence to open. Further movement of the handle ato 'the position 23 causes the opening of the main stea'mvalved and with theha ndle a at'the position-24, the-main steam valved isfu'lly open. If there is no ex must steam available the-valve controlled by: the handle 25 is opened Which allows 'livc steam throttled clown to about atmospheric pressure to enter the injector to t a'hethe place of exhaust steam in t-he known manner. 111 the arrangement-illustrated a t Figures -11- to 1f5, We -provide for theoperatim cf thevalve which controls the supply of throttled down live-steain to the ingector'by the handle a. As \vill be seen by reference to FigLireJL-there is a stearnvalve 26 operated by a stem "from acrankarm 28 on the spihdle llfin addition tocthe valve dpre- -Vl0HSl-y described. 'The pilot valve'e is not employed in the'Figure-ll construction 1n {the latter, the valve "26 is adapted to be opened by the handle a after the valve d liasbeen ful ly opened. The steam-branches f and '9 may each" be provided vith a stop valve 29, 30, see F i ur'es 14 and 15, Or the stop valve may be fitted on the pipe connectipns-to said' branches.

' It willbe understood that the steam which passes-throygh the conduit 9 is reduced in pressure by the automatic reducing valve 'usually provided for the purpose. a In the for er instrumentillu'st-r'ated in Figures 1 and' 2,'the automatic reducingvalve is controlled by the handle '25. Such valve, may, -,hoy'vev er', be arranged 'in any convenient position *between' the control {instrument and 'theinjectoiz' "In Figure -16, the various branches from the" c ntrol fittingillustrated"in Flgpies l arid-Jars sho'w'n'cou led up to the injector whichc omprises a delivery "nozzle 31, a combining noz' zle '32and havin a fla 33 'thereon, conestA', 35 and 86 through'wh1ch the jet issues, a water inlet 37,3 supplement ry live'steai'n inlet 'noa'z le '38 an an'p'u ar space' 39" round the'no'zzle, '38 forthe admission live steam' throttled downfto about atmospheric pressure. The water controlfitting illustrated in Figure 8 is shown "tails thereof, may be resorted to without de'- parting from the principles of our invention and a single manually operatable controlling It will-be understood that changes,--var1a- -tionsand modifications of-the construction and arrangement ofv the parts, and the deas set forth in the claims hereunto ap nded WVedo not claim broadly'to be the rst inventure of a remote control system for an exhaust steam injector as Malcolm Hard I and William A. Buckbee are the first inven- 1 tors of such a system for which Letters Pattenant the United States No. 1,531,004 were my ted to them March 24, 1925, we being not the: first inventors of anything shown in 581101! Letters Patent. We claim 2 s bated-8t} point removedfrom said injector,

.one for. eontrolli .-1. The combination with an exhaust steam zin'ector having conduits connected therewith .forisupplyi to said injectorexhaust steam, water,- supp ementary live steam and auxiliary live steam, and said exhaust steam and water conduits being provided with steam operated valves, of a valve casing 10- located withinsaidcasing, the flow of steam to said steam operated va ves and the other for con- -a pair of valves trolling the flow. of steam through said su plementary live steam conduit, and a sings manually .o

ratable handle for mechanically actuating both of said. valves.

- steam, water, supp ementa 2. The combination with anexhauststeam in'ector having conduits. connected therewith for ,supplyin to said injector exhaust .live steam. and auxiliary live steam, and said exhaust steam and water conduits being provided with steam operated valves, of. a valve casing 10- cated at a point removed fromsaid injector and a plurality of valves, mounted within said casing for controlling theadmission of steam directly to said supplementary and auxiliary live steam. oondults and to. said steam operated valves.

3. The combination with an exhaust steam injector having conduits connected therewith for supplying to said injector, exhaust steam, water, vs11 plementary' and auxiliary live steam, and said exhaust steam and water conduits being provided with steam operated valves, of a valve casing located at a point removed from said in'ector, a plurality of valves mounted in sai casin for controlling the admission of steam 'rectly to said supplementary and auxiliary live steam conduits and to said steam operated valves and means for operating, said determined sequence.

4. The combination with an exhaust steam injector having conduits connected therewith for supplying to said injector, exhaust steam, water, so lementary and auxiliary live steam, and said exhaust steam and wavalves in prebe ter conduits being provided with steam operated valves, of a valve casing located at a point removed from said injector, a plurality of valves mounted in said casing for controlling the admission of steam directlyto said supplementary and auxiliary live steam conduits and to said steam operated valves.

live steam conduits and to said steam operated valves, a single manually operatable controlling handle, and lost motion connecting means between said handle and-the valve for said supplementary live steam conduit.

6. The combination with, an exhaust steam injector having conduits connected therewith for supplying to said injector, exhaust steam, water, supplementary and auxiliary.

live steam, and said exhaust steam and water conduits bein provided with steam operated valves, 0 a .valve casing having a plurality of valves mounted therein for controlling the admission of steam directly to said supplementary and auxiliary live steam conduitsand to said steam operated valves, a manually operatable controlling handle and connections therefrom to the valves of said valve casing to cause the admission of steam to the steam o rated valve of said water conduit, to sai supplementary live steam conduit and to the steam operated valve of the exhaust steam conduit in the sequence set forth.

7. The combination with an exhaust steam injector having a plurality of conduitsconnected therewith for supplying to said injector exhauststeam from an engine, water, auxiliaryand supplementary live steam and steam operated va ves for said water and exhaust steam conduits, of a manually operatable member to control the steam supply to said steam operated valves, pilot and main steam valves for controlling the admission of steam to said supplementary live steam conduit, and mechanical connections therefrom to said manually operatable mem- 8. The combination with an exhaust steam injector having a plurality of conduits connected therewith or supplying to said injector exhaust steam from an engine, water, auxiliary and supplementary live steam, and steam operated valves for said water and e 4 exhaust steam conduits, of a manually opinjeetor'having connected therewith conduits for s-upplyingto said injector, exhaust steam ffromanengine, water, and live steam, and steam operated valves for controlling the supply of exhaust steam and water to said rifrjector, of a manually operatable'member to control the steam supply-to said steam rated valves whereby'remote control of ,t e injector isefl'ected, pilot and main steam valves for controlling the admission of live steam to saidv injector and means to operate said pilot and main steam valve from said control member.

JOYThe combination with ,an exhaust "steam "injector, .of steam operated exhaust steamsnd water valves'for controlling the supply exhaustssteam and of water to the in ector, a manually operatable' member a aptqd to. control the steam supply to the steam ope-rated means for said steam and water valves whereby. remote control v,of the injector is effected; pilot and .main steam valves and means for operating the same ffrom said manually operatable member" member.

whereby the exhaust steam and water sup plies of the injector are controlled.

11. The combination with an exhaust steam injector, ot-steam operated exhaust steam and water valves for controlling the supply of exhaust steam and of water to the injector, a manuallypperatable member adapted ,to control the steam supplyto the steam operated means for said steam and .water valves whereby remote control of the in'ector is effected; pilot and main steam va ves and means for operating the same 'from said manually operatable member whereby the exhaust steam and water supplies of the injector are controlled, and Tmeans whereby the manually operable mem her also ,controls the supply of steam "for working the injectorwhen' exhaust steam is not available.

trol device conggrising a rotatable spindle,

ahandle secur upon saidspindle, aw'disc type valve carried by saidspindle and having ports therein forrplacingthe steam supply connections to the exhaust steam-and water valve operating means in communi- 3-- cation with the steam supply or with the exhaust, a valve for supplying live steam to the injector for increasing its delivery pres sure, and connecting means between said spindle and said live steam supply valve, whereby said live .steamvalve will be operated by the rotation of said spindle.

13. An apparatus-as claimed in claim 12 wherein means are provided for supplying placeof exhaust steam when the latter is not availsteam to the injector to take the able as set forth.

* 14. The combination with an exhaust steam injector having connected therevvith conduits for supplying to said injector, ex-

haust steam from an engine, water and live steam, and steam operated valves" for controlling the supply exhaust steam and waterto said injector, of-a manually operable member tocontrol the steam=supply to said steam operated valves whereb remote control of the injector is e'fl'ecte a live steam supply valve and "mechanical connections"between said manually operable member and said live steam supp'l valve'to cause said valve to be operate by said '15."The combination 'with -an exhaust steam. injector having connected therewith conduits for supplying to said injector,- exhaust steam from an engine, water andlive steam; and'steam operated valvesfor controlling the supply-of exhaust steam and water to said -1nje'ctor ,'of a manually 0perable member to control the steam supply to said steam operated valveswhereby remote control of the injector is eifected, alive steam supply valveanda lost motion connection between said member and live steam supply valve.

"RICHARD ,DAVI-D'MEPOADFE. JAims-cnoxon M-ETCALFE. 

